Light for Underground Workings

Candle Power Forums

Help Support Candle Power:

margaret

Newly Enlightened
Joined
Mar 29, 2012
Messages
2
Hi, I'm a long time watcher, first time poster. I work in an underground mine and i would like to be able to see have a torch which I can carry either on my belt or in my hand (ie it can't be ridiculously heavy), which i can use to see into large black cavities underground. These holes can be up to 100 metres tall and 100 metres in length, and it's pitch black down there too. At the moment I only have a cap-lamp and a very old maglite, which doesn't let me see very far. I was looking at the Led-Lenser but I am wondering what else would be better. Thank you for your help!


1) How would you prefer to purchase the light?


____I would like to purchase the light from a brick and mortar store. I am located in ______________.
xxxxI will be mail-ordering or buying online, so this doesn't matter.


2) Budget: An easy question, but you may change your mind after answering the rest! :-)

____Less than $25.
____Less than $50.
____Less than $100.
____Less than $150.
____Less than $300.
xxxxI have no limit.
____I’m flexible, tell me what you gotJ.
____Other, please specify ________


3) Format:

xxxxI want a flashlight.
____I want a headlamp.
____I want a lantern.
____I want a dive light.
____I want a portable spotlight.


4) Flashlight-specific format/size:

____Keychain size.
____Every day carry small (2-4 inches).
____Every day carry medium (4-7 inches).
____Holster carry.
____Big enough to need its own travel caseJ.
xxxxI don’t care.
____I don’t know.
____N/A


5) Emitter/Light source:

xxxxLED (known for efficiency, longevity, and compactness)
____Incandescent (known for superior color rendition)
____HID (known for max output, but often at the expense of size)
____I don't know.


6) Manufacturer:

xxxxI want to buy a light from a traditional mass producing manufacturer that is ready to go out of the box.
____I would consider getting a light that is pieced together (for example a “host” or flashlight body from one manufacturer, and a “drop-in” emitter from another source). Under the right circumstances, this path can provide more options to the consumer to meet specific needs, and can often be easily upgradeable as technology improves.


7) What battery type do you want to use?

____I intend to use alkaline batteries (AAA, AA, C, D) (disclaimer, while it does not preclude all choices, these are not recommended for many of today’s most powerful lights)
____I intend to use rechargeable nickel chemistry (NiCad, NiMH, NiZn)
____I intend to use lithium primary batteries (CR123, CR2, Energizer Advanced/Ultimate Lithium AA/AAA)
____I intend to use rechargeable lithium (li-ion) chemistry. Feel free to specify a size if you know which size you want (14500, RCR123/16340, 17500, 17670, 18650, etc.)
____I want a light with an integrated rechargeable battery. (Note: these choices may be very limited unless you are looking at spotlights)
xxxx Probably some sort of rechargable, i don't know, whatever is best!

8) How much genuine out the front (OTF) light do you want/need? Sometimes you can have too much light (trying to read up close up with a 100 lumen light is impossible).

____I want to navigate a dark room or read a map (0-10 lumens).
____I want to walk around an unlit rural area (50-150 lumens).
____I want to illuminate my entire backyard or a campsite (150-300 lumens).
____I want to illuminate an entire field, the neighbor's front yard several houses down, impress my friends and neighbors, etc. (300-700 lumens).
xxxxI want ridiculous amounts of lumens (800+ lumens).


9) Throw vs. Flood: At what distance will you be most likely to use this light? Select all that apply.

____Less than 1 yard/meter (reading, other close work)
____Less than 5 yards/meters (looking for something inside a dark shed/garage/basement)
____5-20 yards/meters (check out a noise in the backyard)
____30-50 yards/meters (I have a big backyard)
____50-150 yards/meters (I live in a very rural area/farm with wide open spaces)
xxxx150+ yards (I want maximum throw possible)


10) Runtime: Not over-inflated manufacturer runtime claims, but usable brightness measured from first activation to 50% with new batteries (Measured on maximum output).

____Up to 30 minutes (I want the brightest [and potentially smallest] light for brief periods)
____30-60 minutes (I have plenty of batteries just ready to be changed)
xxxx90-120 minutes (Runtime is moderately important, but still not critical)
____3 hours + (I critically need this light to run on max for extended periods in between battery changes/charges).


11) Durability/Usage: Generally the old phrase “you get what you pay for” is very accurate for flashlights.

____Not Important (A “night-stand” light).
____Slightly Important (Walks around the neighborhood).
____Very Important (Camping, Backpacking, Car Glove-box).
xxxxCritical (Police, Fire, Search & Rescue, Caving, Survival).
____I don't care.
____I don’t know.


12) Switch Type and location (choose all that apply):

____I want a forward clicky (Helpful for momentary activation and signaling).
____I want a reverse clicky (For use with multi-mode/level lights).
____I want a momentary switch (Predominantly for use with signaling and short bursts of momentary light only).
____I want a twisty switch (Tighten the head/tailcap to activate, and the light will stay on until the head/tailcap is loosened).
____I want a body mounted switch (near the head, like on a Maglite).
____I want a tail mounted switch (found on the majority of today’s high end lights).
xxxxI don't care.
____I don’t know.
____Other, please specify____________________.


13) User Interface (UI) and mode selection. Select all that apply.

xxxxA simple on-off with only one output level is fine for me.
____I want 2 light levels. (Brighter/short runtime and Dimmer/long runtime.)
____I want multiple light levels. (Some lights have 5-16 light levels.)
____I want a programmable light.
____I want a selector ring.
____I want a strobe mode. (Blinks to show location.)
____I want SOS mode.
____I want a beacon mode.
____I don’t care.
____I don’t know.


14)Material/Finish/Coating

____Plastic/composite body (this may limit your choices significantly).
xxxxAnodized Aluminum – either type II or III (Hard Anodized) (Aluminum, specifically HA, is the most common material/finish for today’s flashlights).
____Stainless steel (durable, but much heavier than aluminum)
xxxxTitanium (durable and nearly as lightweight as aluminum, but can be moderately to significantly more expensive).
____I don’t care.
____I don’t know.
xxxxOther, please specify__either is good for me if they are lighter than stainless steel.


15) Special Needs/extras: Is there anything else you want or need that hasn't been mentioned? Select any below.

____Red filter (for preserving night vision).
____Other filter colors (Amber, Green, Blue, _________).
____Dedicated R/G/B secondary LEDs.
____“Hybrid” light (bright incandescent combined with long running LEDs)
____Pocket/belt clip
____Holster
____Wrist/Neck Lanyard
____Crenulated bezel
____Non-sparking Intrinsically Safe (IS) for use in explosive environments
 
Welcome to CPF!

Best throwers around that can be reasonably carried would be as follows:

Large size light (maybe too large for everyday carry though) -
Olight M3X. Takes 2 rechargeable 18650 Li-ion batteries (sold seperately & you'll need a good charger too.)

Mid size (probably the best choice for good throw and carry-ability) -
Olight M21X. - Takes 1 rechargeable 18650 battery. This one has a smaller head, so does not throw as well as the M3X. This one can be easily carried on you belt everyday, and can reach out pretty far. I love mine.

Smaller size (2 x AA batteries) -
Quark AA2 Turbo - can use rechargeable batteries such as eneloops (best AA sized rechargeables around.) Great throw for a 2 x AA light, but may not be enough for what you are describing.

Anything smaller is not going to have much throw at all.

The larger the head the more throw the light will have, so keep that in mind when looking at smaller high lumen lights. The lights with small heads cannot throw very well even if they have high lumen ratings.

Go over to goinggear's website to see video reviews of these lights. If you go the Li-ion rechargeable battery route (great batteries by the way) then stick with only good quality batteries such as "AW" brand or "Redilast" brand, and get a good quality charger not a cheap one. Also, get familiar with how to treat these types of batteries by reading up on em over at batteryuniversity.com. You are already using Li-ion batteries in your cell phone, laptop, ipod, camera, etc, but there are some things you need to know about em.

Good Luck.
 
Last edited:
Maybe it has too many options to suit you, but the Armytek Predator is made for throw, with useful side spill. The only programming that you would Have to do would be to select battery type. It has a penetrating beam if you select the narrow smooth reflector option, and a fail safe, long running firefly mode if, God forbid, you get stuck in a hole for days or weeks.
 
Assuming that you're also carrying a back-up light, I would strongly recommend that you go with Surefire or Malkoff as they are very unlikely to fail on you when you're deep underground. The Malkoff Hound Dog XM-L is on sale right now (Google Malkoff Devices) and is a great bargain at the current price. I would recommend that with an MD4 body, so that you can run it on 4xCR123 or 2x18650 (for a rechargeable option). The Surefire M3LT or M6LT would also be excellent options, though they do not officially support rechargeables.

As a back-up, I would recommend the Surefire E1B or an HDS Clicky.
 
Not many people here seem to recommend them, but what about a Streamlight? A Stinger LED, Stinger LED HP, Polystinger LED (all available with the Dual Switch, DS option) would be great. Ultra-reliable, rechargeable (just toss it on the cradle), extra battery can be charged via a piggyback charger, super-easy UI, DS LED has independent head and tail switches. Great thrower, as well (especially the HP).
 
If it's that dark you need to consider if you want throw (tight spot) or more flood (wider beam). I would imagine almost any of the XML-T6 or XML-U2 based lights that use an 18650 or two CR123's will work pretty well.

Something along the lines of the
Sunwayman T20C
Klarus XT-11

Heck there are 2X AA lights that should be able to light up a dark cave.
 
For the best throwers here are the choices:

1. Dereelight DBS
2. Olight SR90
3. Fenix TK41
4. Crelant 7G5 V2
5. Olight M3X
6. Olight SR51
7. Thrunite Catapult V3
8. Sunwayman T40CS
9. Olight SR92
10. Fenix TK35

and the list goes on and on. (sounds like my wishlist right here...hehehe)
 
To the prior suggestions I'll add a Dereelight DBS-T with an XM-L drop-in (one for 1 x 18650 battery), plus a couple of good quality protected 18650 li-ion batteries, a good charger (I like Cottonpickers USB charger), and the most important component, some decent self-education on the safe use and care for li-ion batteries.
 
Id recommend what outdoorsman5 has too. The Olight M21X is an awesome light for sure! Ive been naughty and gone to the other side of a different brand lol.. I now in addition to Outdoorsman5's reccomendation, lean towards the Klarus XT11. But definately check both lights out. That light is also 600 lumens. Might not be enough for you since you want 800+ lumens. But do trust, both the Olight M21X, Klarus XT11 are very well 600 utilized lumens with the best tac UI to date.
 
Some good advice here. I would avoid any lens lenser light! especially if underground with zero ambient light. You do not want reliability issues.
IMHO Id hold off on the Klarus for a while and get the O Light or Zebralight instead. Remember "ONE (light/torch) IS NONE"! so carry a couple spares!!!
 
I'm not going to suggest a light, the one's already mentioned are all great. Couple of things from me. I think it might best for you to look for a light that is as water/dust resistant as possible. Check IP ratings criteria carefully on manufactures websites, they do vary. Maybe avoid lights with selector rings, definitely Led Lensers' Focus System. You may have to be cleaning/rinsing it regularly. So read up on maintenance, cleaning/re-lubing threads & O-rings to keep it top condition. Also Z-Tab and tsask are spot on - Backup!



Happy flashlight hunting.:)
 
Thank you everyone for your replies. I am going through this list now. It's great. All these lights I never even knew about!

I guess out of all of these, I am also looking for something with high lumens. The best ones from here I've seen are around 900. I wonder if i even need more? Do you think I can ever have too many lumens?? :D
 
Thank you everyone for your replies. I am going through this list now. It's great. All these lights I never even knew about!

I guess out of all of these, I am also looking for something with high lumens. The best ones from here I've seen are around 900. I wonder if i even need more? Do you think I can ever have too many lumens?? :D

I think you may getting hung up on the Lumen thing.
In a pitch black environment even a 60-90 lumen light is going to look pretty bright. You need to gauge how far you need to see. Will you be examining things close up? or searching for things further away? In reality you may want a headlamp for close up items and a moderate size light with adjustable output for general use and area light. The differences between a 400 lumen light and 500 lumens can not really be seen by eye. at 900 Lumens you will need multiple batteries as run times get shorter.

There is more to picking a light than just Lumens
 
The ThruNite Scorpion (750 OTF Lumen) is another good small light to consider, but it does have a rotating ring in the tailcap so if there is a lot of dirt or sand in your work area than it might not be for you...

I just bought an EagleTac M3C4 3XM 3X 1200 Lumen and this light will make your cave seem like it's daylight in there (powerful and flood light) lol but than again it also has a rotary ring on it...

If your looking for more of a thrower I would recommend, just like many other people on here the Olight SR51 or Thrunite Catapult V3 you'll be very happy with both.

My next kind of a dream light is the Olight SR92 (1700 Lumen) it's one of the brightest lights you can buy but it's also way to big to just carry around with you...

Take care and good luck, you have a lot of good suggestions in your thread here....
 
Back
Top